Seismic Damage Analysis of RCC Gravity Dams Using 3D Nonlinear FEM

2011 ◽  
Vol 120 ◽  
pp. 397-402
Author(s):  
Ze Li ◽  
Li Xiang Zhang
Keyword(s):  
Finite Element ◽  
Seismic Response ◽  
Element Model ◽  
Gravity Dam ◽  
Earthquake Resistance ◽  
Nonlinear Fem ◽  
Dam Foundation ◽  
Important Indicator ◽  
Damage Area ◽  
Resistance Performance

The earthquake-resistance performance of gravity dam is an important indicator of dam safety. The earthquake-resistance performance of non-overflow monolith for Guanyinyan gravity dam is evaluated in this paper. First of all, the three-dimensional finite element model of dam is established by ABAQUS software. And then, the seismic response of gravity dam is analyzed by nonlinear finite element method, while the concrete damage plasticity constitutive model is adopted to describe the tensile characteristic of concrete. The seismic response and the damage evolution of dam are obtained. The results show that the dam has formed a crack-like band damage area at the end of earthquake, which are located in the dam along the dam-foundation boundary near the upstream face. At last, according to the results of simulation, the safety and the damage range are investigated.

Research on Optimization Design of the Lateral Stiffness Satio about the Frame-Supported Multi-Ribbed Structure

2010 ◽  
Vol 152-153 ◽  
pp. 954-958
Author(s):  
Qi Zhang ◽  
Qian Feng Yao ◽  
Yin Zhang ◽  
Wei Huang ◽  
Qi Xiang Yin
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Seismic Response ◽  
Theoretical Basis ◽  
Optimization Design ◽  
Earthquake Resistance ◽  
Lateral Stiffness ◽  
Element Analysis ◽  
Resistance Performance ◽  
Standard Frame

By testing 4 pin standard frame-supported multi-ribbed composite slab’s mechanical proper- ties under the horizontal load’s funtion,it is got that the earthquake resistance performance influence of lateral stiffness satio to frame-supported multi- ribbed slabs.The reasonable value scope of stiffness satio between transformation layers is obtained by finite element analysis of seismic response of frame-support- ed multi-ribbed slab structures and provides theoretical basis to engineering design

Analysis for 3-D Seepage Field of Gravity Dam Foundation

2012 ◽  
Vol 468-471 ◽  
pp. 335-338
Author(s):  
Rui Rong Xu ◽  
Wen Ting Zhan ◽  
Qing Xu
Keyword(s):  
Finite Element ◽  
Finite Element Model ◽  
Element Model ◽  
Gravity Dam ◽  
Seepage Field ◽  
Dam Foundation ◽  
Initial Flow ◽  
Seepage Problem ◽  
Equivalent Method ◽  
The Finite Element Model

An equivalent method that simulate drainage holes is adopted in the analysis of 3-D seepage field. The Initial Flow Method is applied in this paper to deal with the unconfined seepage problem. In this paper, the finite element model of a gravity dam project is established and the seepage field is analyzed.

The Analysis of Influencing Factors for Seismic Performance of Load-Bearing Wall Using Light Artificial Block

2013 ◽  
Vol 671-674 ◽  
pp. 1498-1504
Author(s):  
Jing Hai Yu ◽  
Yan Wang ◽  
Tian Hui Fei
Keyword(s):  
Finite Element ◽  
Influencing Factors ◽  
Seismic Behavior ◽  
Element Model ◽  
Earthquake Resistance ◽  
Load Bearing ◽  
Factors Affecting ◽  
Shear Performance ◽  
Main Factors ◽  
Resistance Performance

This article analyzed the influencing factors for earthquake resistance performance of load-bearing wall through the establishment of finite element model and the reasonable load way. The factors of vertical stress, masonry strength, and horizontal reinforcement strip were analyzed, and relevant conclusions were drawn. The results indicate that the masonry strength is the main factors affecting shear performance of the wall and the horizontal reinforcement strip enhance the seismic behavior of the wall.

scholarly journals The Effect of Shear Sliding of Vertical Contraction Joints on Seismic Response of High Arch Dams with Fine Finite Element Model

2020 ◽  
Vol 2020 ◽  
pp. 1-12
Author(s):  
Shengshan Guo ◽  
Jianxin Liao ◽  
Hailong Huang ◽  
Hui Liang ◽  
Deyu Li ◽  
...  
Keyword(s):  
Finite Element ◽  
Finite Element Model ◽  
Seismic Response ◽  
Element Model ◽  
Arch Dam ◽  
Slip Condition ◽  
Dead Load ◽  
High Arch Dam ◽  
Arch Dams ◽  
Contraction Joints

The contraction joints of arch dams with and without shear keys are simplified to be with no-slip condition and with relative sliding condition, respectively. Based on the Lagrange multiplier method, a contact model considering the manner of independent cantilever dead load type with no-slip condition and relative sliding condition is proposed to model the nonlinearities of vertical contraction joins, which is special to the nonlinear analysis of arch dams considering the manner of dead load type. Different from the conventional Gauss iterative method, the strategy of the alternating iterative solution of normal force and tangential force is employed. The parallelization based on overlapping domain decomposition method (ODDM) and explicit message passing using distributed memory parallel computers is employed to improve the computational efficiency. An existing high arch dam with fine finite element model is analyzed to investigate the effect of shear sliding of vertical joints on seismic response of the arch dam. The result shows that the values of maximum principal tensile stress under relative sliding condition are significantly greater than those under no-slip condition.

Deep Anti-Sliding Stability of Wudu RCC Gravity Dam

2012 ◽  
Vol 446-449 ◽  
pp. 2776-2782 ◽  
Author(s):  
Fan Feng ◽  
Guo Xin Zhang
Keyword(s):  
Finite Element ◽  
Limit Equilibrium ◽  
Test Method ◽  
Gravity Dam ◽  
Nonlinear Finite Element Method ◽  
Fissure Zone ◽  
Dam Foundation ◽  
Geological Conditions ◽  
Joint Element ◽  
Sliding Stability

The deep anti-sliding stability of dam foundation has been an important issue in the study of dam field. Rigid body limit equilibrium method and nonlinear finite element method have been adopted on the analysis of sliding stability. In the current paper, the joint element is used to simulate faults, interlayer shear zone and slight inclined fissure zone in complicated geological conditions of Wudu dam. Stress integral method, overload method and strength reduction method are utilized for analysis on deep anti-sliding of Wudu RCC gravity dam, moreover, after being compared with the results by Sarma method, finite element direct force method and geomechanical model test method etc., the consistent conclusion is obtained.

The Seismic Performance Simulation Analysis on the Irregular Structure of the Castle Hotel of Dalian

2013 ◽  
Vol 663 ◽  
pp. 80-86
Author(s):  
Hai Qing Liu ◽  
Ming Ji Ma ◽  
Gui Jun Wang
Keyword(s):  
Finite Element ◽  
Seismic Response ◽  
Simulation Analysis ◽  
Three Dimensional ◽  
Time History ◽  
Element Model ◽  
Theoretical Research ◽  
Element Analysis ◽  
Disaster Experience ◽  
Irregular Structure

More and more irregular structure appears in people's lives, while the theoretical research and disaster experience show that the irregular structure in the earthquake will produce translation and torsion coupled spatial vibration, and sometimes it will cause very serious consequences. Being based on the practical engineering -the Castle Hotel of Dalian, this text makes use of finite element analysis software--- ANSYS. By analyzing the dynamic characteristics and seismic response, we get the self-vibration characteristics of the structure and the time history curve of top level displacement and acceleration of the structure under the effect of earthquake forces. The calculation results indicate that it is effective and reasonable to set up three-dimensional finite element model used for the analyzing of seismic response by ANSYS.

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